PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-20:57:40
G02     200.8          25.6               17.2 +/-    2.65      33.2 +/-    2.65  0.230 / 0.580
G06     170.7          57.4               14.8 +/-    1.40      17.3 +/-    1.40  0.180 / 0.760
G13     222.9          10.2               15.8 +/-    1.67      43.9 +/-    1.67  0.040 / 0.050
G17     27.0           56.1               11.7 +/-    0.53      13.8 +/-    0.53  0.030 / 0.050
G19     339.0          69.8               13.0 +/-    0.92      13.7 +/-    0.92  0.050 / 0.100
G24     305.9          33.3               11.6 +/-    1.65      19.0 +/-    1.65  0.040 / 0.110
G28     89.9           40.9               12.9 +/-    0.56      18.5 +/-    0.56  0.090 / 0.150